HTML5 reads local file sample code_html5 tutorial skills

The html structure style is as follows:

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The code is as follows:

Add picture

In terms of style, the input box of the input element should not be displayed. In this case, the input needs to be set to a transparent style, and then covered over the button element. Only then can the button be clicked to upload the image. . Set accepted to "image/*" to allow only image files to be uploaded.

Css style is as follows

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The code is as follows:

.addpic{
position:relative;
margin-left:100px;
width:95px;
height:30px;
}
.addlogo {
background: none repeat scroll 0 0 rgba(0, 0, 0, 0);
cursor: pointer;
font-size: 30px;
opacity: 0;
position: absolute;
right: 0 ;
top: 0;
z-index: 10;
}

js code

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The code is as follows:

function readFiles(evt){
var files=evt.target.files;
if(!files){
console.log("the file is invalid");
return;
}
for(var i=0, file; file=files[i]; i ){
var imgele=new Image();
var thesrc=window.URL.createObjectURL(file);
imgele.src=thesrc;
imgele.onload=function(){
$("#showlogo ").attr("src",this.src);
}
}
}

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The code is as follows:

$(document).ready(function(){
$("#logoimg").change(function(e ){
readFiles(e)
});
});